Innovazione e gestione dei programmi sincronizzata e collaborativa per i nuovi programmi
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Innovazione e gestione dei programmi sincronizzata e collaborativa per i nuovi programmi
EsploraIndustria automobilistica e trasporti
Integration of mechanical, software and electronic systems technologies for vehicle systems
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Innovazione dei prodotti attraverso la gestione efficace di processi integrati di formulazione, confezionamento e produzione
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Lo sviluppo di nuovi prodotti si avvale dei dati per migliorare la qualità e la redditività riducendo costi e time-to-market
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Supply chain collaboration in design, construction, maintenance and retirement of mission-critical assets
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Construction, mining, and agricultural heavy equipment manufacturers striving for superior performance
Explore IndustrySoluzioni per macchinari industriali e attrezzature pesanti
Integration of manufacturing process planning with design and engineering for today’s machine complexity
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Visibility, compliance and accountability for insurance and financial industries
Explore IndustrySettore navale
Innovazione nella cantieristica navale per ridurre i costi di sviluppo delle future flotte in modo sostenibile
Esplora il settoreMedia & Telecommunications
Siemens PLM Software, a leader in media and telecommunications software, delivers digital solutions for cutting-edge technology supporting complex products in a rapidly changing market.
Explore IndustryApparecchiature medicali e farmaceutica
"Innovazione di prodotto personalizzata" attraverso la digitalizzazione per soddisfare la domanda del mercato e ridurre i costi
Esplora il settoreSmall & Medium Business
Remove barriers and grow while maintaining your bottom line. We’re democratizing the most robust digital twins for your small and medium businesses.
Explore IndustryHow CFD Improves Propeller Performance for Efficient Ship Propulsion
How CFD Improves Propeller Performance for Efficient Ship Propulsion
Guest Speakers: Norbert Bulten, Wärtsilä Propulsion; Alejandro Caldas and Dr. Dmitriy Ponkratov, Lloyd’s Register
The maritime industry is pushing hard for the highest efficiency for ship propulsion. This trend started in the days when oil prices were high, but due to stringent emissions regulations remains high on the agenda, despite the drop in prices. The numerical estimation of performance for marine propellers has traditionally been carried out with Boundary Element Methods (BEMs) which have a well-established track record of providing accurate predictions of pressure distribution within the steady state and reasonable estimates of thrust and torque performance.
Wärtsilä Propulsion show that with the aid of CFD simulations of the propeller in behind ship condition, a direct feedback loop has been established to the propeller designers. Determination of the actual transient blade loads during a revolution has given more insight in the actual physical phenomenon. Based on this understanding, the design process can be pushed further to the edge. One increasingly critical aspect of this is the cavitation behavior, and the risk for cavitation erosion.
In this webcast, Lloyd’s Register demonstrates how they use relatively fast numerical methods for calculating the performance of a propeller in the wake flow of a ship. Through their in-depth practical knowledge and examples, they highlight the benefits and deficiencies of this method before explaining how Lloyd’s Register uses advanced CFD methods, employing high order physics to capture detailed flow features of the propeller operating in the turbulent ship wake.
Furthermore, recently published work is presented that shows how numerical functions coupled with CFD calculations can be used to predict cavitation erosion aggressiveness. Examples are shown where this method has been used to predict cavitation for a model scale hydrofoil, ship scale rudder and a cargo ship’s full scale propeller, on which the severe cavitation erosion was reported.
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Guest Speakers: Norbert Bulten, Wärtsilä Propulsion; Alejandro Caldas and Dr. Dmitriy Ponkratov, Lloyd’s Register
The maritime industry is pushing hard for the highest efficiency for ship propulsion. This trend started in the days when oil prices were high, but due to stringent emissions regulations remains high on the agenda, despite the drop in prices. The numerical estimation of performance for marine propellers has traditionally been carried out with Boundary Element Methods (BEMs) which have a well-established track record of providing accurate predictions of pressure distribution within the steady state and reasonable estimates of thrust and torque performance.
Wärtsilä Propulsion show that with the aid of CFD simulations of the propeller in behind ship condition, a direct feedback loop has been established to the propeller designers. Determination of the actual transient blade loads during a revolution has given more insight in the actual physical phenomenon. Based on this understanding, the design process can be pushed further to the edge. One increasingly critical aspect of this is the cavitation behavior, and the risk for cavitation erosion.
In this webcast, Lloyd’s Register demonstrates how they use relatively fast numerical methods for calculating the performance of a propeller in the wake flow of a ship. Through their in-depth practical knowledge and examples, they highlight the benefits and deficiencies of this method before explaining how Lloyd’s Register uses advanced CFD methods, employing high order physics to capture detailed flow features of the propeller operating in the turbulent ship wake.
Furthermore, recently published work is presented that shows how numerical functions coupled with CFD calculations can be used to predict cavitation erosion aggressiveness. Examples are shown where this method has been used to predict cavitation for a model scale hydrofoil, ship scale rudder and a cargo ship’s full scale propeller, on which the severe cavitation erosion was reported.